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Phase-Manipulated Calcium Borate-Based Multicolor Mechanoluminescence.
Jiajia Meng1, Junlu Sun1, Wei Zhang1
1Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Materials Physics, Ministry of Education, School of Physics, Zhengzhou University, Zhengzhou, China.
Advanced Materials (Deerfield Beach, Fla.)
|January 6, 2026
Summary
Researchers developed a new, low-temperature method to create multicolor mechanoluminescence materials. These advanced materials offer enhanced security features and real-time motion sensing capabilities.
Area of Science:
- Materials Science
- Solid State Chemistry
- Luminescence
Background:
- Multicolor mechanoluminescence (ML) materials are crucial for anti-counterfeiting, smart skin, and structural health monitoring.
- Current ML material synthesis requires high temperatures (>1000°C) and protective atmospheres, limiting widespread application.
Purpose of the Study:
- To develop a facile, low-temperature, atmosphere-free synthesis for tunable multicolor ML materials.
- To explore the potential of these materials in advanced applications like optical encryption and motion sensing.
Main Methods:
- Synthesized calcium borate-based ML materials (Ca2B2O5 and CaB2O4) using a low-temperature, atmosphere-free method.
- Controlled the phase ratio by adjusting the stoichiometric ratio of raw materials (H3BO3 and CaO).
- Incorporated ML materials into polydimethylsiloxane (PDMS) elastomers.
Main Results:
- Achieved tunable ML emission from green to orange (535-605 nm) by manipulating Mn2+ coordination in Ca2B2O5 and CaB2O4 phases.
- Demonstrated multicolor ML in PDMS elastomers for multi-level optical encryption.
- Showcased stress-induced color variation for real-time joint motion monitoring.
Conclusions:
- Established a versatile route for designing low-temperature, phase-tunable ML materials.
- Highlighted promising applications in next-generation information security and intelligent motion-sensing technologies.
